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glow plugs
- Thread starter bigron
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CJ-FOREVER
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Most people are running an os#8.
Fox, McCoy, DuraTrax, Tower Hobbies are the only other glow plug manufactures I can think of. $6 might seem a little expensive but its not like you are replacing them every time you go out. If you are, then something is wrong with your tune. Here is some information to help you....
"How to "READ" your glow plug.
OS and Turbo glow plugs go gray sooner [easier] than McCoy plugs; this is not necessarily bad. Actually when A new plug wire just goes slightly gray after a 5 or 10 minute hard run it means your very close to an optimal horsepower tune, but be careful the next step is TOO LEAN!
My rule of thumb.
1} Wire and surrounding bottom of plug wet, with like new shiny wire = rich side of optimum power 85%
2} Wire and surrounding bottom of plug starting to dry and wire starting to gray = Very close to optimum power 95%
3} Wire and surrounding bottom of plug dry, wire totally gray but not distorted optimum power 100%
4} Wire and surrounding bottom of plug dry, wire distorted = slightly lean DANGER!
5} Wire and surrounding bottom of plug dry, wire broken and distorted or burnt up = extremely lean possible engine damage!
Note: You can only "Read" your plug in a nearly new state [Wire like new and shiny] A gray plug can still operate well. But after it has totally gone gray performance can start to fall off. To test just put in a new plug and if there is no difference in performance save the gray one or put it back in. If your engine does not feel or run right tray a new plug before making major tune change's
Good Luck
(information from Paris Racing)"
Info from http://www.nitrohouse.com/read_your_plug.htm
"How to "READ" your glow plug.
OS and Turbo glow plugs go gray sooner [easier] than McCoy plugs; this is not necessarily bad. Actually when A new plug wire just goes slightly gray after a 5 or 10 minute hard run it means your very close to an optimal horsepower tune, but be careful the next step is TOO LEAN!
My rule of thumb.
1} Wire and surrounding bottom of plug wet, with like new shiny wire = rich side of optimum power 85%
2} Wire and surrounding bottom of plug starting to dry and wire starting to gray = Very close to optimum power 95%
3} Wire and surrounding bottom of plug dry, wire totally gray but not distorted optimum power 100%
4} Wire and surrounding bottom of plug dry, wire distorted = slightly lean DANGER!
5} Wire and surrounding bottom of plug dry, wire broken and distorted or burnt up = extremely lean possible engine damage!
Note: You can only "Read" your plug in a nearly new state [Wire like new and shiny] A gray plug can still operate well. But after it has totally gone gray performance can start to fall off. To test just put in a new plug and if there is no difference in performance save the gray one or put it back in. If your engine does not feel or run right tray a new plug before making major tune change's
Good Luck
(information from Paris Racing)"
Info from http://www.nitrohouse.com/read_your_plug.htm
Well, you won't find the #8 any cheaper. I think I paid $16 for the last 2 I bought.
HumboldtBlazer
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I run OS T Series P7, but that is turbo sorry wrong plugs hehehe. Anywho yes the OS 8's are a little shorter when held up to a McCoy MC59 or 9. It lowers compressions a little when it shorter is all. My plugs btw are $11 damnit!